where the Fourier series coefficients \(c_m\)  are the Modified Generalized Bessel Functions (M-GBFs) [1]} with integer order \(m\)  expressed as \(\mathcal {I}_m^{1:K}\left(\lbrace -j\beta _k\rbrace \right)\) . The expansion in (REF ) shows that the MTSFM belongs to the family of generalized multi-carrier waveform models such as Orthogonal Frequency Division Multiplexing (OFDM) [2]}. A unique characteristic of the MTSFM model is that unlike standard OFDM models with a generic set of coefficients \(c_m\) , the GBF coefficients of the MTSFM model ensures the resulting waveform is constant modulus [3]}, [4]}. The spectrum of the MTSFM waveform is expressed as an orthonormal superposition of frequency shifted \(\operatorname{sinc}\)  functions [3]}
\(S\left(f\right) = \sqrt{ET} \sum _{m=-\infty }^{\infty }\mathcal {I}_m^{1:K}\left(\lbrace -j\beta _k\rbrace \right) \operatorname{sinc}\left[\pi T \left(f-\frac{m}{T}\right)\right].\) 
